anyone knows how to unlock the bootloader of Moto 360 marshmallow ?

and I tried to restableser the Moto 360 marshmallow and not reset is manufactured only the only solution I find it goes is to unlock the bootloader and putting on a rom the same vercion or less but can not unlock the bootloader because pressing the button , only change the start mode off , normal mode and reset mode does not work. if someone could help as you can unlock the bootloader marshmallow is 954 verscion me I want not leave as a pizza pie papers thanks for your help
video link problem :( https://www.youtube.com/watch?v=8JankqRjVMI

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